***HOW Browser Extensions Steal Your Data*** # Description > Browser extensions can be a > > lot more dangerous than you realize. You probably don't understand the permissions that you're granting when installing a browser extension, so in this video we look at these permissions under a microscope, and explain what each one means. We also uncover the sketchy underground extension marketplace that no one talks about -- extensions that have lots of users are purchased and repurposed to collect data and do all kinds of nefarious things. > > 00:00 Intro > 00:31 Overview > 01:18 What is a Browser Extension? > 04:09 Understanding Permissions > 05:54 Background Service Workers > 07:00 Pop-Ups > 07:22 Content Scripts > 07:54 Specific Permissions > 16:17 Underground Extension Marketplaces > 18:47 Should You Use Extensions At All? > 21:08 Conclusion > > Extensions are powerful tools that can be used for good and bad. Be careful which ones you let into your digital life. > > Special Thanks to Matt Frisbie for sharing his expertise! > https://twitter.com/mattfriz > Building Browser Extensions Book: https://amzn.to/43mg6YH